mirror of
https://github.com/Ed94/Odin.git
synced 2026-06-25 07:04:58 -07:00
Ginger Bill
283 lines
9.1 KiB
Odin
283 lines
9.1 KiB
Odin
#import "fmt.odin";
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#import "strings.odin";
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const Handle = i32;
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const FileTime = u64;
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const Errno = int;
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// TODO(zangent): Find out how to make this work on x64 and x32.
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const AddressSize = i64;
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// INVALID_HANDLE: Handle : -1;
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const O_RDONLY = 0x00000;
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const O_WRONLY = 0x00001;
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const O_RDWR = 0x00002;
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const O_CREAT = 0x00040;
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const O_EXCL = 0x00080;
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const O_NOCTTY = 0x00100;
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const O_TRUNC = 0x00200;
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const O_NONBLOCK = 0x00800;
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const O_APPEND = 0x00400;
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const O_SYNC = 0x01000;
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const O_ASYNC = 0x02000;
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const O_CLOEXEC = 0x80000;
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const SEEK_SET = 0;
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const SEEK_CUR = 1;
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const SEEK_END = 2;
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const SEEK_DATA = 3;
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const SEEK_HOLE = 4;
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const SEEK_MAX = SEEK_HOLE;
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// NOTE(zangent): These are OS specific!
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// Do not mix these up!
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const RTLD_LAZY = 0x1;
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const RTLD_NOW = 0x2;
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const RTLD_LOCAL = 0x4;
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const RTLD_GLOBAL = 0x8;
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const RTLD_NODELETE = 0x80;
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const RTLD_NOLOAD = 0x10;
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const RTLD_FIRST = 0x100;
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var args: [dynamic]string;
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const _FileTime = struct #ordered {
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seconds: i64,
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nanoseconds: i64
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}
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const Stat = struct #ordered {
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device_id : i32, // ID of device containing file
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mode : u16, // Mode of the file
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nlink : u16, // Number of hard links
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serial : u64, // File serial number
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uid : u32, // User ID of the file's owner
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gid : u32, // Group ID of the file's group
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rdev : i32, // Device ID, if device
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last_access : FileTime, // Time of last access
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modified : FileTime, // Time of last modification
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status_change : FileTime, // Time of last status change
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created : FileTime, // Time of creation
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size : i64, // Size of the file, in bytes
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blocks : i64, // Number of blocks allocated for the file
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block_size: i32, // Optimal blocksize for I/O
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flags : u32, // User-defined flags for the file
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gen_num : u32, // File generation number ...?
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_spare : i32, // RESERVED
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_reserve1,
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_reserve2 : i64, // RESERVED
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};
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// File type
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const S_IFMT = 0170000; // Type of file mask
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const S_IFIFO = 0010000; // Named pipe (fifo)
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const S_IFCHR = 0020000; // Character special
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const S_IFDIR = 0040000; // Directory
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const S_IFBLK = 0060000; // Block special
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const S_IFREG = 0100000; // Regular
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const S_IFLNK = 0120000; // Symbolic link
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const S_IFSOCK = 0140000; // Socket
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// File mode
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// Read, write, execute/search by owner
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const S_IRWXU = 0000700; // RWX mask for owner
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const S_IRUSR = 0000400; // R for owner
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const S_IWUSR = 0000200; // W for owner
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const S_IXUSR = 0000100; // X for owner
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// Read, write, execute/search by group
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const S_IRWXG = 0000070; // RWX mask for group
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const S_IRGRP = 0000040; // R for group
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const S_IWGRP = 0000020; // W for group
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const S_IXGRP = 0000010; // X for group
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// Read, write, execute/search by others
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const S_IRWXO = 0000007; // RWX mask for other
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const S_IROTH = 0000004; // R for other
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const S_IWOTH = 0000002; // W for other
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const S_IXOTH = 0000001; // X for other
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const S_ISUID = 0004000; // Set user id on execution
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const S_ISGID = 0002000; // Set group id on execution
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const S_ISVTX = 0001000; // Directory restrcted delete
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const S_ISLNK = proc(m: u32) -> bool #inline {return ((m) & S_IFMT) == S_IFLNK; }
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const S_ISREG = proc(m: u32) -> bool #inline {return ((m) & S_IFMT) == S_IFREG; }
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const S_ISDIR = proc(m: u32) -> bool #inline {return ((m) & S_IFMT) == S_IFDIR; }
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const S_ISCHR = proc(m: u32) -> bool #inline {return ((m) & S_IFMT) == S_IFCHR; }
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const S_ISBLK = proc(m: u32) -> bool #inline {return ((m) & S_IFMT) == S_IFBLK; }
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const S_ISFIFO = proc(m: u32) -> bool #inline {return ((m) & S_IFMT) == S_IFIFO; }
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const S_ISSOCK = proc(m: u32) -> bool #inline {return ((m) & S_IFMT) == S_IFSOCK;}
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const R_OK = 4; // Test for read permission
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const W_OK = 2; // Test for write permission
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const X_OK = 1; // Test for execute permission
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const F_OK = 0; // Test for file existance
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#foreign_system_library dl "dl";
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#foreign_system_library libc "c";
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const unix_open = proc(path: ^u8, mode: int) -> Handle #foreign libc "open";
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const unix_close = proc(handle: Handle) #foreign libc "close";
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const unix_read = proc(handle: Handle, buffer: rawptr, count: int) -> AddressSize #foreign libc "read";
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const unix_write = proc(handle: Handle, buffer: rawptr, count: int) -> AddressSize #foreign libc "write";
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const unix_lseek = proc(fs: Handle, offset: AddressSize, whence: int) -> AddressSize #foreign libc "lseek";
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const unix_gettid = proc() -> u64 #foreign libc "gettid";
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const unix_stat = proc(path: ^u8, stat: ^Stat) -> int #foreign libc "stat";
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const unix_access = proc(path: ^u8, mask: int) -> int #foreign libc "access";
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const unix_malloc = proc(size: int) -> rawptr #foreign libc "malloc";
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const unix_free = proc(ptr: rawptr) #foreign libc "free";
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const unix_realloc = proc(ptr: rawptr, size: int) -> rawptr #foreign libc "realloc";
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const unix_getenv = proc(^u8) -> ^u8 #foreign libc "getenv";
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const unix_exit = proc(status: int) #foreign libc "exit";
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const unix_dlopen = proc(filename: ^u8, flags: int) -> rawptr #foreign dl "dlopen";
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const unix_dlsym = proc(handle: rawptr, symbol: ^u8) -> (proc() #cc_c) #foreign dl "dlsym";
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const unix_dlclose = proc(handle: rawptr) -> int #foreign dl "dlclose";
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const unix_dlerror = proc() -> ^u8 #foreign dl "dlerror";
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// TODO(zangent): Change this to just `open` when Bill fixes overloading.
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const open_simple = proc(path: string, mode: int) -> (Handle, Errno) {
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var cstr = strings.new_c_string(path);
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var handle = unix_open(cstr, mode);
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free(cstr);
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if(handle == -1) {
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return 0, 1;
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}
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return handle, 0;
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}
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// NOTE(zangent): This is here for compatability reasons. Should this be here?
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const open = proc(path: string, mode: int, perm: u32) -> (Handle, Errno) {
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return open_simple(path, mode);
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}
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const close = proc(fd: Handle) {
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unix_close(fd);
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}
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const write = proc(fd: Handle, data: []u8) -> (AddressSize, Errno) {
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assert(fd != -1);
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var bytes_written = unix_write(fd, &data[0], len(data));
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if(bytes_written == -1) {
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return 0, 1;
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}
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return bytes_written, 0;
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}
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const read = proc(fd: Handle, data: []u8) -> (AddressSize, Errno) {
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assert(fd != -1);
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var bytes_read = unix_read(fd, &data[0], len(data));
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if(bytes_read == -1) {
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return 0, 1;
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}
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return bytes_read, 0;
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}
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const seek = proc(fd: Handle, offset: AddressSize, whence: int) -> (AddressSize, Errno) {
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assert(fd != -1);
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var final_offset = unix_lseek(fd, offset, whence);
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if(final_offset == -1) {
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return 0, 1;
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}
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return final_offset, 0;
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}
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const file_size = proc(fd: Handle) -> (i64, Errno) {
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var prev, _ = seek(fd, 0, SEEK_CUR);
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var size, err = seek(fd, 0, SEEK_END);
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seek(fd, prev, SEEK_SET);
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return size, err;
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}
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// NOTE(bill): Uses startup to initialize it
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var stdin: Handle = 0; // get_std_handle(win32.STD_INPUT_HANDLE);
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var stdout: Handle = 1; // get_std_handle(win32.STD_OUTPUT_HANDLE);
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var stderr: Handle = 2; // get_std_handle(win32.STD_ERROR_HANDLE);
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/* TODO(zangent): Implement these!
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const last_write_time = proc(fd: Handle) -> FileTime {}
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const last_write_time_by_name = proc(name: string) -> FileTime {}
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*/
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const stat = proc(path: string) -> (Stat, bool) #inline {
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var s: Stat;
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var cstr = strings.new_c_string(path);
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defer free(cstr);
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var ret_int = unix_stat(cstr, &s);
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return s, ret_int==0;
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}
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const access = proc(path: string, mask: int) -> bool #inline {
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var cstr = strings.new_c_string(path);
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defer free(cstr);
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return unix_access(cstr, mask) == 0;
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}
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const heap_alloc = proc(size: int) -> rawptr #inline {
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assert(size > 0);
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return unix_malloc(size);
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}
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const heap_resize = proc(ptr: rawptr, new_size: int) -> rawptr #inline {
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return unix_realloc(ptr, new_size);
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}
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const heap_free = proc(ptr: rawptr) #inline {
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unix_free(ptr);
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}
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const getenv = proc(name: string) -> (string, bool) {
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var path_str = strings.new_c_string(name);
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var cstr: ^u8 = unix_getenv(path_str);
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free(path_str);
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if(cstr == nil) {
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return "", false;
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}
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return strings.to_odin_string(cstr), true;
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}
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const exit = proc(code: int) #inline {
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unix_exit(code);
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}
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const current_thread_id = proc() -> int {
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// return cast(int) unix_gettid();
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return 0;
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}
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const dlopen = proc(filename: string, flags: int) -> rawptr #inline {
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var cstr = strings.new_c_string(filename);
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var handle = unix_dlopen(cstr, flags);
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free(cstr);
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return handle;
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}
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const dlsym = proc(handle: rawptr, symbol: string) -> (proc() #cc_c) #inline {
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assert(handle != nil);
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var cstr = strings.new_c_string(symbol);
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var proc_handle = unix_dlsym(handle, cstr);
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free(cstr);
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return proc_handle;
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}
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const dlclose = proc(handle: rawptr) -> bool #inline {
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assert(handle != nil);
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return unix_dlclose(handle) == 0;
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}
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const dlerror = proc() -> string {
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return strings.to_odin_string(unix_dlerror());
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}
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